What is the max boost from an 2.0TSi engine
0.9 bars (13.1 psi) for stock GTI (208 bhp), and 1.2 bars (17.4 psi) for Edition 30 (227 bhp) Golf R running on little moddified engine with k04 boost raised up to 1.5 bars (267 bhp). Maximum boost on stock engine internals for GTI / TSi version is 2 bars (~310 bhp). Golf R moddified engine can hold up ~350 bhp @ over 2 bars (29 psi) on stock internals. Problem are not engine internals or engine parts, it's about transsmision. DSG transsmision for GTI cant hold safetly more than 300 ft lbs or 408 Nm of torque.
Check this, probably will help you more with safe tuning :) http://www.mtm-online.de/en/VW/Golf-6/2-0-TSI-155-kW-210hp-Golf-GTI-front?FZID=GOLF6155&KIT=mgo6210310fc Performance upgrade GOLF VI GTI 310 hp (228 kW) incl. exhaust system, MTM Turbokit, exhaust manifold
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